Here's why:
* The Tabon Man lived approximately 67,000 years ago. This is long before the development of writing systems, so we have no written records of their language.
* Language changes over time. Even in the relatively short time since the development of written language, we see that languages evolve and diversify. It's highly likely the language spoken by the Tabon Man would be unrecognizable to modern speakers.
* The Tabon Man's remains were found in the Philippines. However, the Philippines is home to a diverse array of languages, and it's impossible to say which language family or branch the Tabon Man's language might have belonged to.
While we may never know the specific language spoken by the Tabon Man, the discovery of his remains provides valuable insight into the early history of human migration and language development in the region.